curioustorvald/Terrarum-sans-bitmap
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glyph control bits spec change

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This commit is contained in:
minjaesong
2021-11-25 10:31:16 +09:00
parent 368bf0ee15
commit 5c534ed388
4 changed files with 39 additions and 34 deletions
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12
CONTRIBUTING.md
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@@ -50,12 +50,12 @@ Rightmost vertical column (should be 20 px tall) contains the tags. Tags are def
K -,
K |= Tags used by the "Keming Machine"
K |
K -' ,-Unused
· --'
X -, Align to this X pos of prev char, only valid if write-on-top is 1
X |= and is centre-aligned and non-zero
X | (if this is zero, floorOf(width/2) will be used instead)
X -'
K -' ,-Nudging control bit (see below)
N --'
X -, write-on-top and centre-aligned: Align to this X pos of prev char
X | (if this is zero, floorOf(width/2) will be used instead)
X | NOT write-on-top: nudge the texture by this pixels to the
X -' left (if N is unset) or right (if N is set)
A -,_ 0 Align 1 Align 0 Align 1 Align before
A -' 0 left 0 right 1 centre 1 the glyph
D --write-on-top, usually it's diatritics but not always (e.g. devanagari vowel sign O)

21
src/net/torvald/terrarumsansbitmap/GlyphProps.kt
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@@ -6,10 +6,11 @@ package net.torvald.terrarumsansbitmap
data class GlyphProps(
val width: Int,
val writeOnTop: Boolean,
val alignWhere: Int,
val alignXPos: Int,
val alignWhere: Int, // ALIGN_LEFT..ALIGN_BEFORE
val alignXPos: Int, // 0..15 or DIA_OVERLAY/DIA_JOINER depends on the context
val rtl: Boolean = false,
val stackWhere: Int = 0,
val stackWhere: Int = 0, // STACK_UP..STACK_UP_N_DOWN
var nudgeRight: Boolean = false,
var extInfo: IntArray? = null,
val hasKernData: Boolean = false,
@@ -35,12 +36,13 @@ data class GlyphProps(
}
constructor(width: Int, tags: Int) : this(
width,
tags.ushr(7).and(1) == 1,
tags.ushr(5).and(3),
tags.ushr(1).and(15),
tags.and(1) == 1,
tags.ushr(8).and(3)
width,
tags.ushr(7).and(1) == 1,
tags.ushr(5).and(3),
tags.ushr(1).and(15),
tags.and(1) == 1,
tags.ushr(8).and(3),
tags.and(1) == 1
)
constructor(width: Int, tags: Int, isLowheight: Boolean, isKernYtype: Boolean, kerningMask: Int) : this(
@@ -50,6 +52,7 @@ data class GlyphProps(
tags.ushr(1).and(15),
tags.and(1) == 1,
tags.ushr(8).and(3),
tags.and(1) == 1,
null,
true,

19
src/net/torvald/terrarumsansbitmap/gdx/TerrarumSansBitmap.kt
View File

@@ -884,20 +884,21 @@ class TerrarumSansBitmap(
posXbuffer[charIndex] = posXbuffer[nonDiacriticCounter]
}
else if (!thisProp.writeOnTop) {
posXbuffer[charIndex] = when (itsProp.alignWhere) {
GlyphProps.ALIGN_RIGHT ->
posXbuffer[nonDiacriticCounter] + W_VAR_INIT + alignmentOffset + interchar + kerning + extraWidth
GlyphProps.ALIGN_CENTRE ->
posXbuffer[nonDiacriticCounter] + HALF_VAR_INIT + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
else ->
posXbuffer[nonDiacriticCounter] + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
}
posXbuffer[charIndex] = ((if (thisProp.nudgeRight) 1 else -1) * thisProp.alignXPos) +
when (itsProp.alignWhere) {
GlyphProps.ALIGN_RIGHT ->
posXbuffer[nonDiacriticCounter] + W_VAR_INIT + alignmentOffset + interchar + kerning + extraWidth
GlyphProps.ALIGN_CENTRE ->
posXbuffer[nonDiacriticCounter] + HALF_VAR_INIT + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
else ->
posXbuffer[nonDiacriticCounter] + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
}
nonDiacriticCounter = charIndex
stackUpwardCounter = 0
stackDownwardCounter = 0
extraWidth = 0
extraWidth = (if (thisProp.nudgeRight) -1 else 1) * thisProp.alignXPos // NOTE: sign is flipped!
}
else if (thisProp.writeOnTop && thisProp.alignXPos == GlyphProps.DIA_JOINER) {
posXbuffer[charIndex] = when (itsProp.alignWhere) {

21
src/net/torvald/terrarumtypewriterbitmap/gdx/TerrarumTypewriterBitmap.kt
View File

@@ -51,7 +51,7 @@ class TerrarumTypewriterBitmap(
var interchar = 0
private val glyphProps = HashMap<CodePoint, GlyphProps>()
val glyphProps = HashMap<CodePoint, GlyphProps>()
private val sheets = HashMap<String, PixmapRegionPack>()
private val spriteSheetNames = HashMap<String, String>()
@@ -424,20 +424,21 @@ class TerrarumTypewriterBitmap(
if (!thisProp.writeOnTop) {
posXbuffer[charIndex] = when (itsProp.alignWhere) {
GlyphProps.ALIGN_RIGHT ->
posXbuffer[nonDiacriticCounter] + TerrarumSansBitmap.W_VAR_INIT + alignmentOffset + interchar + kerning + extraWidth
GlyphProps.ALIGN_CENTRE ->
posXbuffer[nonDiacriticCounter] + HALF_VAR_INIT + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
else ->
posXbuffer[nonDiacriticCounter] + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
}
posXbuffer[charIndex] = ((if (thisProp.nudgeRight) 1 else -1) * thisProp.alignXPos) +
when (itsProp.alignWhere) {
GlyphProps.ALIGN_RIGHT ->
posXbuffer[nonDiacriticCounter] + TerrarumSansBitmap.W_VAR_INIT + alignmentOffset + interchar + kerning + extraWidth
GlyphProps.ALIGN_CENTRE ->
posXbuffer[nonDiacriticCounter] + HALF_VAR_INIT + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
else ->
posXbuffer[nonDiacriticCounter] + itsProp.width + alignmentOffset + interchar + kerning + extraWidth
}
nonDiacriticCounter = charIndex
stackUpwardCounter = 0
stackDownwardCounter = 0
extraWidth = 0
extraWidth = (if (thisProp.nudgeRight) -1 else 1) * thisProp.alignXPos // NOTE: sign is flipped!
}
else if (thisProp.writeOnTop && thisProp.alignXPos == GlyphProps.DIA_JOINER) {
posXbuffer[charIndex] = when (itsProp.alignWhere) {